iommu/mediatek: Lookup phandle to retrieve syscon to infracfg
This driver will get support for more SoCs and the list of infracfg compatibles is expected to grow: in order to prevent getting this situation out of control and see a long list of compatible strings, add support to retrieve a handle to infracfg's regmap through a new "mediatek,infracfg" phandle. In order to keep retrocompatibility with older devicetrees, the old way is kept in place. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Miles Chen <miles.chen@mediatek.com> Reviewed-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/20220616110830.26037-3-angelogioacchino.delregno@collabora.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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